/* ========================================
   Variables & Theme - Premium Dark Mode
======================================== */
:root {
    /* Colors - HSL for better alpha handling */
    --hue-primary: 250; /* Indigo/Purple vibe */
    --hue-secondary: 280; /* Violet */
    --hue-accent: 330; /* Pinkish */
    
    /* Default Dark Mode Values */
    --primary: hsl(var(--hue-primary), 90%, 65%);
    --primary-glow: hsl(var(--hue-primary), 90%, 65%, 0.5);
    
    --bg-body: #030014; /* Deep space black */
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    
    --text-main: #ffffff;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --text-amount: #ffffff;
    
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-hover: rgba(255, 255, 255, 0.15);
    
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    
    --blob-opacity: 0.4;
    --logo-bg: rgba(255, 255, 255, 0.1);
    --logo-color: var(--primary);

    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --progress-track-bg: rgba(255, 255, 255, 0.06);
    --progress-track-border: rgba(255, 255, 255, 0.08);
    --progress-tip-bg: #fff;
    --progress-tip-glow: rgba(255, 255, 255, 1);
    
    /* Lo que se debe. Un rojo de alarma no ayuda a quien abre esto: se usa un tono
       terracota apagado, que sigue leyéndose como "esto está en tu contra" sin gritar.
       El verde de lo positivo no cambia, así que el contraste entre los dos se mantiene. */
    --debe: #d99a92;
    --debe-soft: rgba(217, 154, 146, 0.14);
    --debe-line: rgba(217, 154, 146, 0.18);

    --glass-015: rgba(255, 255, 255, 0.015);
    --glass-02: rgba(255, 255, 255, 0.02);
    --glass-03: rgba(255, 255, 255, 0.03);
    --glass-05: rgba(255, 255, 255, 0.05);
    --glass-inverted: rgba(0, 0, 0, 0.15);

    --font-main: 'Outfit', sans-serif;
}

/* Light Mode Overrides */
[data-theme="light"] {
    --primary: hsl(var(--hue-primary), 80%, 50%);  /* Darker indigo for white bg */
    --primary-glow: hsl(var(--hue-primary), 80%, 50%, 0.2);
    
    --bg-body: #f8fafc; /* Slate 50 */
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    
    --text-main: #0f172a; /* Slate 900 */
    --text-muted: #475569; /* Slate 600 */
    --text-dim: #64748b; /* Slate 500 */
     --text-amount: #0f172a;
    
    --border-glass: #e2e8f0; /* Slate 200 */
    --border-glass-hover: #cbd5e1; /* Slate 300 */
    
    --progress-track-bg: rgba(0, 0, 0, 0.06);
    --progress-track-border: rgba(0, 0, 0, 0.08);
    --progress-tip-bg: #ffffff;
    --progress-tip-glow: rgba(0, 0, 0, 0.1);
    
    /* Sobre blanco hay que bajar el tono para que se lea, no subir la saturación. */
    --debe: #a35f57;
    --debe-soft: rgba(163, 95, 87, 0.10);
    --debe-line: rgba(163, 95, 87, 0.16);

    --glass-015: rgba(0, 0, 0, 0.015);
    --glass-02: rgba(0, 0, 0, 0.02);
    --glass-03: rgba(0, 0, 0, 0.03);
    --glass-05: rgba(0, 0, 0, 0.05);
    --glass-inverted: rgba(255, 255, 255, 0.5);

    --shadow-glass: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    
    --blob-opacity: 0.15; /* Much more subtle blobs */
    --logo-bg: rgba(99, 102, 241, 0.1); /* Primary color with low opacity */
    --logo-color: var(--primary);
}

/* ========================================
   Reset & Base
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.5;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ========================================
   Background Effects (Blobs)
======================================== */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: var(--blob-opacity);
    transition: opacity 0.5s ease;
    animation: blob-bounce 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    animation-delay: 0s;
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, hsl(var(--hue-secondary), 80%, 60%) 0%, transparent 70%);
    animation-delay: -2s;
}

.blob-3 {
    top: 40%;
    left: 30%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, hsl(var(--hue-accent), 80%, 60%) 0%, transparent 70%);
    animation-delay: -4s;
    opacity: calc(var(--blob-opacity) * 0.5);
}

@keyframes blob-bounce {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

/* ========================================
   Layout
======================================== */
.app {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    /* backdrop-filter: blur(0px); */
}

/* ========================================
   Header
======================================== */
.header {
    padding: 1.5rem;
    padding-top: 2rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--logo-color);
    background: var(--logo-bg);
    padding: 0.5rem;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
}

.main {
    flex: 1;
    padding: 0 1.5rem 2rem;
    width: 100%;
}

/* ========================================
   User Greeting
======================================== */
.user-greeting {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.greeting-text {
    display: flex;
    flex-direction: column;
}

.greeting-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

#debtor-name {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.2;
}

/* ========================================
   Balance Card (Minimalist)
======================================== */
.balance-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glass);
    margin-bottom: 2.5rem;
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1); /* Bouncier & longer */
    
    /* Scroll Reveal Initial State - More visible */
    opacity: 0;
    transform: translateY(50px) scale(0.95);
    
    /* Glassmorphism restoration */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.balance-card.reveal {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* More Visible Shine Animation */
.balance-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -150%;
    width: 150%; /* Wider shine */
    height: 100%;
    background: linear-gradient(
        to right,
        transparent,
        rgba(255, 255, 255, 0.15), 
        transparent
    );
    transform: skewX(-25deg);
    pointer-events: none;
    transition: left 0.5s ease;
}

.balance-card:hover::before {
    animation: shine 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes shine {
    0% { left: -150%; }
    100% { left: 150%; }
}

.balance-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.balance-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.balance-amount-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

/* removed .debt-icon-container and .currency */

.total-amount {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--text-amount);
    letter-spacing: -2px;
}

.balance-footer {
    border-top: 1px solid var(--border-glass);
    padding-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.balance-footer::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background-color: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary);
}

/* ========================================
   Debts List
======================================== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

.badge {
    font-size: 0.75rem;
    background: var(--bg-card);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    color: var(--text-muted);
    border: 1px solid var(--border-glass);
    font-weight: 500;
}

.debts-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.debt-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    position: relative;
    cursor: default;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02); /* subtle shadow */
    
    /* Scroll Reveal Initial State - More visible */
    opacity: 0;
    transform: translateY(40px);
}

.debt-card.reveal {
    opacity: 1;
    transform: translateY(0);
}

.debt-card:hover {
    transform: translateY(-2px);
    background: var(--bg-card-hover);
    border-color: var(--border-glass-hover);
    box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.1);
}

.debt-info {
    flex: 1;
}

.debt-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-main);
}

.debt-date {
    font-size: 0.8rem;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* removed .debt-icon-container */

.debt-amount {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-amount);
}

/* ========================================
   States (Loading / Error)
======================================== */
.state-container {
    padding: 4rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.loader {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-glass);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.icon-box {
    width: 64px;
    height: 64px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.icon-box.error {
    color: #ef4444;
}

.state-container h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.state-container p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.hidden {
    display: none !important;
}

/* ========================================
   Footer
======================================== */
.footer {
    text-align: center;
    padding: 1.5rem;
    font-size: 0.75rem;
    color: var(--text-dim);
    margin-top: auto;
}

.footer i {
    vertical-align: middle;
    margin-left: 0.25rem;
}

/* ========================================
   Empty State (in list)
======================================== */
.empty-state {
    padding: 3rem 1rem;
    text-align: center;
    /* Removed border/bg for minimalist feel, just text and icon */
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

/* ========================================
   Animations
======================================== */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Credit Card (Saldo a Favor)
======================================== */
.credit-card {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideIn 0.5s ease-out;
    margin-bottom: 2rem;
}

.credit-icon {
    width: 40px;
    height: 40px;
    background: rgba(16, 185, 129, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #10b981;
    font-size: 1.25rem;
}

.credit-info {
    display: flex;
    flex-direction: column;
}

.credit-label {
    font-size: 0.75rem;
    color: #10b981;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.credit-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}
[data-theme="light"] .credit-amount {
    color: #065f46;
}

/* ========================================
   Enhanced Debt Card
======================================== */
.debt-card {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
}

.debt-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.debt-info {
    flex: 1;
}

/* Amount Styling */
.debt-main-amount {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.debt-amount-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-amount);
    line-height: 1.2;
}

.debt-amount-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Progress Section */
.progress-section {
    width: 100%;
    margin-top: 0.25rem;
}

.progress-track {
    height: 4px;
    background: var(--bg-card-hover);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: #10b981; /* Success Green */
    border-radius: 2px;
    transition: width 1s ease-out;
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-dim);
    font-family: monospace; /* For number alignment */
}

/* Partial State Colors */
.is-partial .debt-amount-value {
    color: #f59e0b; /* Amber for pending balance */
}
/* ========================================
   Header Actions
======================================== */
.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-action-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s ease;
}

.header-action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-main);
    transform: translateY(-1px);
}

.back-btn {
    width: auto; /* Not just an icon box */
    padding: 0 1rem;
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 500;
    gap: 0.5rem;
}

.view-section {
    transition: opacity 0.3s ease;
}

.view-section.hidden {
    display: none;
    opacity: 0;
}

.view-section.active {
    display: block;
    opacity: 1;
    animation: slideIn 0.3s ease-out;
}

/* ========================================
   History Cards
======================================== */
.history-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
    margin-bottom: 1rem;
    animation: slideIn 0.4s ease-out;
}

.history-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}


.history-card.type-deuda::before {
    background-color: var(--card-accent-color, var(--debe));
    width: 6px;
}

.history-card.type-pago {
    border-radius: 20px;
    padding: 1rem;
    background: rgba(255,255,255,0.02);
}
.history-card.type-pago::before { display: none; }

.history-card.is-cruce {
    background: transparent;
    border: 1px dashed rgba(59, 130, 246, 0.4);
    box-shadow: none;
    align-items: center;
    border-radius: 16px;
}
.history-card.is-cruce::before { display: none; }

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.history-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

.history-date {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.history-amount {
    font-weight: 700;
    font-size: 1rem;
}
.type-deuda .history-amount { color: #f87171; }
.type-pago .history-amount { color: #34d399; }

.history-footer {
    border-top: 1px solid var(--border-glass);
    padding-top: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
}

.history-balance-label { color: var(--text-dim); }
.history-balance-value { 
    font-weight: 700; 
    color: var(--text-main);
}

/* ========================================
   Buscador del historial
======================================== */
.history-search {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 0.7rem 0.9rem;
    margin-bottom: 1rem;
    transition: border-color 0.2s ease;
}

.history-search:focus-within {
    border-color: var(--border-glass-hover);
}

.history-search i {
    color: var(--text-dim);
    font-size: 1.05rem;
}

.history-search input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 0.95rem;
}

.history-search input::placeholder {
    color: var(--text-dim);
}

/* La X nativa de <input type="search"> en Chrome es casi invisible en oscuro. */
.history-search input::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--text-dim);
    mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M19 6.4 17.6 5 12 10.6 6.4 5 5 6.4 10.6 12 5 17.6 6.4 19 12 13.4 17.6 19 19 17.6 13.4 12z'/></svg>") center/contain no-repeat;
    cursor: pointer;
}